by taking x = -3/4 , y = 2/3 , z = -5/6 verify that x(y - z ) = x × y - x × z
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-3/4(2/3-(-5/6))=-3/4*2/3-(-3/4*-5/6)
-3/4(2/3+5/6)=-3/4*2/3-3/4*5/6
-3/4(4+5/6)=-1/2-5/8
lcm of 4&6 is 12
-9+18/12=-1/2-5/8
lcm of 2&8 is 8
9/12=-4-5/8
9/12=-9/8
x(y-z) is not equal to x*y-x*z
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